(19)

(11)

EP 3 201 392 A1

(12)

(43) Date of publication: 09.08.2017 Bulletin 2017/32 (21) Application number: 15847724.0 (22) Date of filing: 30.09.2015

(51) International Patent Classification (IPC):  D21F 11/02(2006.01) B32B 5/18(2006.01) D21F 1/02(2006.01) B29C 35/08(2006.01) C08J 9/36(2006.01) H01J 31/00(2006.01) (86) International application number: PCT/IB2015/057477 (87) International publication number: WO 2016/051350 (07.04.2016 Gazette 2016/14)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA (30) Priority: 03.10.2014 SE 1451172 (71) Applicant: Stora Enso OYJ 00101 Helsinki (FI)	(72) Inventors: NORDSTRÖM, Jan-Erik S-13147 Nacka (SE) RÄSÄNEN, Jari FI-55420 Imatra (FI) (74) Representative: Lindberg, Berndt Åke  Stora Enso AB Group Intellectual Property Box 9090 650 09 Karlstad 650 09 Karlstad (SE)